Wiregrass region autocross 2026

[95Blitz]

I only got 2 runs yesterday, a normal event is 4 in the AM and 4 in the PM. This is run one (51.814) my second run i missed a gate. Getting ready for the third run the hard line at the clutch master cylinder shot out, the clip failed.

 

[95Blitz]

No video this week, Go Pro problems. But I ended up 2nd in raw time and 7th in pax.

I was running 10psi front and 13psi rear.

 

[Rttoys]

Pax just kills us.

 

[95Blitz]

Tread wear patterns, whats the thoughts.
Front.

Rear.

 

[Keckster]

hard to tell from the photos. 10 front is a little low personally but it also depends on how much camber you run. My most recent even I found 12psi front was optimal however the inner tread was getting a lot more heat so I intend to take some camber out and increase pressures. 13 in the rear feels really low, I usually end up around 18psi in the rear on 255/4R17 Yokes. I use either chalk or tire paint and make a line from the sidewall onto the tread and check it between runs. What are you running for alignment?

 

[95Blitz]

Castor left & right is set to 8.8*
Camber all the way around is 1.5*
Toe In is 1/8"

 

[Rttoys]

Your pressures are close to mine. the Bridgestones feel and contact well at 11.5f/14.5r, where my Toyo’s were happier at 12/15. Still debating on going lower on the Bridgestones though. We really need autocross to start up again. The track day I did last weekend was helpful though.

front seem to be pretty equal inner to outer. May be able to come in a little on camber.

rear is hard to deal with since the struts just don’t like to play nice

what are the load/pressure specs on the side of the tire? When I switched from the Toyo to the Bridgestones, the Bridgestone load capacity was higher, with what seem to be a harder sidewall. I dropped pressure a little more and it handles it well.

1521# @50psi on the r888r
1653# @50psi on the RE-71EZ

 

[95Blitz]

1653# @50PSI for the Kumho V730's.

The tire really responded well to the lower pressures.

 

[Worsham]

Tread wear patterns, whats the thoughts.
Front.
View attachment 56559
Rear.
View attachment 56560

For me, outer tire edge wear on both sides indicates low tire pressure. The sidewalls are doing most of the work. If it's wearing in the middle, it's over inflation. But that's just my opinion.

 

[95Blitz]

For me, outer tire edge wear on both sides indicates low tire pressure. The sidewalls are doing most of the work. If it's wearing in the middle, it's over inflation. But that's just my opinion.

Agreed, for a road car. But I believe ( I could be wrong) the tire is rolling (under?) vs just riding on the edge. I'm going to chalk the tire next time out and see what it's doing.